2 May
2018
2 May
'18
6:05 p.m.
You are correct that concatenation vs interpolation works and doesn't work in slightly
inconsistent ways, for instance function string arguments vs assignment.
The $_s() transformation may help make life easier.
On May 2, 2018 10:50:53 AM EDT, George Diamantopoulos <georgediam(a)gmail.com> wrote:
Hello,
I'm a a bit confused as to when string concatenation will work in
kamailio
config file. So far I have identified the following cases:
Working:
As part of the right hand side of an assignment:
$var(x) = "string1" + "string2";
String argument of some functions:
xlog("L_ERR", "string1" + "string2" + DEFINED_STRING +
'\n');
Conditional Statements:
if ( ru =~ "$" + "sip:" + $var(user) ) {
Not Working:
In string transformations (the fact that quotes is not part of the
argument
should give a hint though:
$var(x) = $(var(y){s.replace,match,"repl1" + "repl2"});
String argument of some other functions:
append_hf_value("P-Asserted-Identity", "<" +
"$var(new_pai)" + ">");
lookup("location", "sip:$var(username)@" + SIP_REALM_DEFINITION));
In module parameter definitions:
modparam("nathelper", "sipping_from", "sip:keepalive@" +
SIP_REALM_DEFINITION)
So far, I have found this to be fairly consistent, except for use
within
functions. For example, string concatenation works for the second
argument
of xlog, but not for the string arguments of append_hf_value() or
lookup().
Is there anyway to know this for each function beforehand, or is my
only
choice to go through trial and error here? Thanks!
BR,
George
-- Alex
--
Sent via mobile, please forgive typos and brevity.